Recording and sales-check mechanism for fluid-dispensing pumps



Nov. 27, 1928.

A R. MASON ET AL. RECORDING AND SALES CHECK MECHANSM FOR FLUIDDISPENSING PUMPS Filed Aug. 17, 1927 Flig Patented Nev. 27, 192s.

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ARTHUR n. MASON AANDfO'r'ro o. r'AimNG, 'or MEDronDyOnndoN, Ass'iGNORs"fro AOCURATEGASOLINE RECORDING COMPANY, A CORPORATION 'or OR-nsfON.l

RECORDING AND fsAL-Es-GHEK ivreorrnNisM ron rLurD-DIsrENsrNG Trui/frs."`

Application .mea August 17, 1927. :semi No. erases.

Our invention has for its lobject means whereby the customer andsalesmen are each provided with a check ori printed'slip showpenfsed `isprovided with a vslip on which is 'distinctly registered the actualfluid 'dispensed 'exclusively to `him .in any 'given 'trans action.

Vlvloreover :the vsalesman loperating the pump lis-provided 'with aVsimilar' slip by 'which' the fluid 'dispensed by him from any given pumpi'sseparat'ely recorded, while the owner of the pump is provided with avrecord of fthe total fluid x'disfp'e'nsed and a record ofy ea'chtransaction.l

Afurther -obj ectofour invention is lmechanisin adapted to beV operated@in comhin ation with a fluid dispensing pump such as that generallyemployed for dispensing` gasoline.

or fuel oil fait service stationsand "oil inimeasured quantities Vfromcontainers.

Our mechanism iis simple, eicient and readily accessible andld'oes not'further complicate any ofthe operations heretofore performed onconventional pumps.

By referring to the accompanyingvdrawing our invention will be madeclear.

In Ythedrawing Fig. 'lis a side view partly iin section showingaconventional"gasoline dispensing pump Ito whicl'i'ou'r :invention has'been applied.

1F ig. 2 is a plan view of `a portion of the operating mechanism withthe dispensing pump operating handle and piston rack fand withY certainolf the parts left out 'to better illustrate the operation. y

Fig. 3 is aside view 'of yfragmentary portionsof Fig. 2.

Fig. Zfis an enlarged detail illustrating the operation of `the'. pa-wl'and ratchet mechanism of Figs- `1.a'nd'2.

Fig. "5 is a `fragmentary section through a front :portion ofthecasingof the mechanism showing fthe manner in which the record slips aredischarged.

Throughout the figures *similar numerals 'refer to ridentical parts;

Y The cylinder nf 'a conventiimal fluid dise placement pump is shown at1 wherein is operated fthe piston 2, to Withdraw gasoline-for otherfluid from `the `tank 3` and ,distribute the same `from the nozzle-4L,thegasoline being transferred from the 'tank 3 through the pipes tothe'container 6 upon ythe operation offtherack 7 by the handle'S fall1in 'the 'con- Vventional manner.

Referring particularly tof Fig. 2-the track 7 is operated Yby Vthehand'le 8 which rotates the pinion 9-which in turn rotates the secondpinion `10 actuating the recording mechanism gear lfl. Y

This latter is the latter being supported `in the `bones13` 14;.

Mounted on the gear `1'1 `are a plurality o`f posts 15, 16 supportingaYlike-plurality of pawls 17, 18 respectively. f 1

These pawls-are fadaptedto engage fthe skew ratchet wheel 19 which isintegrally connected with ,the strip feeding idrum`l20, so

vthat with amoti'on of the gear inthe direction of arrow/21, lthe p'awlsVengage the ratc'het i vand' causef'the drum 20 to rotate, advancing thepaper strips "22, .23, y24C in synchronism with the movementofthepist-on 2 andtherefore .in direct proportion `fto the vfluidAdispensed by the pump.

YThe ratchet 19 and feeding wheel 20 :are freely mounted `upon the'shaftk12 and are frictionally engaged vtherev'v-ith through thefriction id-isc 25 lsplined tothe shaft 12 at 26 and held against thewheel .2Q by the helical spring 2.7f, the ratchet bearing against the fcollar 28 carried lon `the shaft 112 on the 4other side.

`Any conventional characters yor printing or embosslng may beprov1ded ontheypaper strip orstrips or they may be .impressed as.

issued with suitable characters or embossing -fas follows.V

he 'clutch :plate :25 actuated .byv the spring rprovides Va [drivingfriction against lthe Vdrum 20 to enable the drum to be moveduponovercoming the said Afriction into lanydesired aposition Withprespect tothe shaft and gear train and so as to secure la .perfectjregistration oftheipapfer strips when inserted, and moreover, to prevent vtearing of:the paper strips, should they, for any reason, stick during theoperation of the machine.

At v37 is a 'printing or embossing wheel carried vfreely-onitheshaift12, y

Vfgearedto the drum`20 having raised graduations Vor :pifinehed strips'38, su th at 'th several strips of paper being delivered between. thedrum 20 and the wheel 37 may be punctured or embossed to indicate theproportional movement of the pump piston and therefore the fluiddelivered from the pump.

The paper strips are supplied from any conventional source reels,positioned elsewhere in the box, well-known but not shown, and the saidstrips 22, 23, 24. are passed between the drum 2O and wheel 37.

After passing between the wheels 2O and 37 the paper record advancesthrough the carrier tube 39 and after the pumping operation iscompleted, is ready for delivery from the safety casing a() hinged at11.A

This safety casing and the cutting knife combined therewith for severingthe paper strips is made the subject of a separate and co-pendingapplication by us, Serial No. 213,689 filed Aug. 17, 1927, to whichreference is herein made.

' The paper strip 22. is a complete record of all of the pumptransactions to date and the two additional slips 23 and 24 which areduplicates thereof are, one for the customer and one'for the particularsalesman who has handled the transaction. f

A spring 29 likewise forces .the gear 11 causing its hub 3() to rideagainst the fixed pin 31.

AThis pin has a wedge shaped end and normally during operation ridesagainst the face 31 of the hub'30 and when the piston 2 is in the lowestpossible or Zero position, the end of the pin 31 engages within the slot33 while as soon as the handle 8 isv rotated, the first movement of thegear' 11 causes the Vface 32 to advance, forcing the slot 33 against thewedge face of the pin 31 causing the gear to move from the full line tothe dotted line position of Fig. a and thereafter ride with the face 32against the end 33 of the pin 31, with the pin free of the slot.

This movement is for the purpose of causing an immediate engagementbetween the pawl end 35 with the tooth- 36, the lateral motion'from thefull line to the dotted line position of the pawl causing the pawl end35 to contact immediately against the ratchet tooth.

It is to be understood that I employ a plurality of pawls as 17, 18 andthat these have their engaging ends spaced on a pitch different from thepitch of the skew teeth of the ratchet, so that one or the other of saidpawls is nearest to actual engagement with the ratchet tooth; and thatthen upon the first movement above described, when the gear 11 and pawls17, 18 are laterally displaced from the full line to the dotted positionthe pawl which was originally nearest to the tooth is caused immediatelyto engage the tooth.

In this way, any lost motion between the pawls and ratchet teeth will'be taken up and a perfect accuracy of the paper movement synchronouswith the movement of the pump piston 2 is obtained. Y

lt will thus be seen that the motion is transmitted from handle 8 andpump actuating rack 7 through lthe pinion 10, gear 11, and

in the limits of the friction the drum 20 moves in exact proportion vtothe pump piston c and therefore the paper strip or strips advance inexact synchronism with the pump piston 2. f

If the paper sticks or if a new roll or rolls be inserted they maybeadjusted so that-their graduations v38 are corresponding exact-ly withthe position of the pump piston by ro.

tating the drum 20 against the friction 25.

Vle claim:

1. Sales check mechanism for fluid dispensing appara-tus comprising amember constrained to rotate in synchr'onism with said dispensingapparatus, a shaft on Awhich said member is adapted to slide, va skewtoothed ratchet on said shaft, means fixed to said ratchet for advancingrecord strips, and a plurality of pawls carried on said member andadapted to selectively engage the -said ratchet teeth when the saidlmember is rotated.

2. Sales check mechanism for fluid dispensing apparatus comprising amember constrained to rotate .in synchronism with Vsaid dispensingapparatus, a shaft on which said member is adapted to slide, a.skew'toothed ratchet on said shaft, mechanism fixed to said ratchet foradvancing record strips, and a plurality of pawls carried on said memberand adapted to selectively engage the said ratchet teeth when the saidmember ris rotated, means adapted to force said member laterally on thefirst increment of rotative movementthereby causing the pawls to movelaterally and one offsaid pawls to engage the skew teeth on a minimum ofrotative movement and a spring holdingsaid member against said means.

3. Mechanism as set forth in claim 2 wherein the said mechanism includesa drum and in combination therewith with a plurality of paper stripsadapted to be advanced by said drum on the rotation of said member.

4. Sales check mechanism for a fluid reciprocating pump comprising` amember constrained to rotaterin synchronism with said pump, a shaft onwhich said member is adapted to slide,askew toothed ratchet on saidshaft, mechanism fixed to said ratchet foradvancing record strips, and aplurality of pawls carried on said member and adapted to se- IUSlectvely engage the said ratchet teeth when the sad member is rotated.

5. Sales cheek mechanism for a fluid recproeatng pump comprising amember eenstranecl to rotate in synehronism with said pump, a shaft onwhich said member is adaptecl to slide, a skew toothed ratchet on saidshaft, mechanism xed to said ratchet for advancing record stripe, and aplurality of pawls carried on sacl member and adapted to selectivelyengage the Said ratchet teeth When the Said member s rotated, means'lincrement of rotative movement thereby causing the pawls to movelaterally and one of said pavvls teengage the skew teeth on a mnimam ofrotative movement and a spring holding said member against said means.

ARTHUR R. MASON. OTTO O. FAILING.

